Antiferromagnetic structure in tetragonal CuMnAs thin films

Tetragonal CuMnAs is an antiferromagnetic material with favourable properties for applications in spintronics. Using a combination of neutron diffraction and x-ray magnetic linear dichroism, we determine the spin axis and magnetic structure in tetragonal CuMnAs, and reveal the presence of an interfa...

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Detalles Bibliográficos
Autores principales: Wadley, P., Hills, V., Shahedkhah, M. R., Edmonds, K. W., Campion, R. P., Novák, V., Ouladdiaf, B., Khalyavin, D., Langridge, S., Saidl, V., Nemec, P., Rushforth, A. W., Gallagher, B. L., Dhesi, S. S., Maccherozzi, F., Železný, J., Jungwirth, T.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group 2015
Materias:
Article
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4658521/
https://www.ncbi.nlm.nih.gov/pubmed/26602978
http://dx.doi.org/10.1038/srep17079
Descripción
Sumario:Tetragonal CuMnAs is an antiferromagnetic material with favourable properties for applications in spintronics. Using a combination of neutron diffraction and x-ray magnetic linear dichroism, we determine the spin axis and magnetic structure in tetragonal CuMnAs, and reveal the presence of an interfacial uniaxial magnetic anisotropy. From the temperature-dependence of the neutron diffraction intensities, the Néel temperature is shown to be (480 ± 5) K. Ab initio calculations indicate a weak anisotropy in the (ab) plane for bulk crystals, with a large anisotropy energy barrier between in-plane and perpendicular-to-plane directions.

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